Ok thanks, any recommendations for a cheap pump ?Suds pump... washing machine pump is all about volume.
Cheap one will be fine, and probably cost less than messing about
12 and 24v water feature pumps are cheap too, flow enogh for coolant, and are usually centrifugal pumps so no problems with valves clogging with swarf / filings, useful if (like me) you have the saw running on 3-phase 415 and have a 24v control transformer (need a rectifier in between).
Dave H. (the other one)